Abstract
Objective To discuss the correlation of perioperative brain function state quantitative monitoring results with postoperative cognitive dysfunction (POCD) in elderly patients. Methods The clinical data of 200 patients with lumbar spinal decompression fusion surgery were analyzed retrospectively. They were divided into the POCD group (134 patients) and the non POCD group (66 patients) by Z count scores. The results of test indexes including wavelet index (WLI), concentration index (i_22) and brain activity index (i_20) were compared. Results Perioperative elderly patients Brain function characteristics analysis results of perioperative elderly patients showed that the level of WLI at postoperative day 7(96.24 ± 2.41)was higher than that at preoperative day 1(98.76 ± 2.65) and postoperative day 3(98.68 ± 3.01), and there were significant differences (t =4.475, 4.475, P =0.000, 0.000). The level of i_22 at preoperative day 1, postoperative day 3 and postoperative day 7 had no significant difference (F =7.365, P =0.075). The level of i_20 at preoperative day 1, postoperative day 3 and postoperative day 7 had no significant difference (F =6.663, P =0.068). At preoperative day 1, the level of i_22 in POCD group was significantly lower than that in non POCD group(t =15.875, P =0.000). Conclusions Brain function index of perioperative elderly patients has certain characteristics in different time points, and i_22 may could be considered as a judge index of POCD. Key words: Postoperative cognitive dysfunction; Brain function state quantitative; Perioperative period
Published Version
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